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前沿研究 | 南京中医药大学:枸杞-菊花药对改善碘酸钠诱导的小鼠视网膜变性并保护Müller细胞免受氧化应激损伤

  • 2026-04-17 14:01:46
前沿研究 | 南京中医药大学:枸杞-菊花药对改善碘酸钠诱导的小鼠视网膜变性并保护Müller细胞免受氧化应激损伤

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前沿研究 | 南京中医药大学:枸杞-菊花药对改善碘酸钠诱导的小鼠视网膜变性并保护Müller细胞免受氧化应激损伤

Journal of Ethnopharmacology

Science & Technology

近日,南京中医药大学国家中医药管理局中药资源产业化与方剂创新药物国家地方联合工程研究中心Cheng Cao等人在Journal of Ethnopharmacology上发表题为“Lycii Fructus and Chrysanthemum Flos, a Chinese medicine herbal pair, ameliorates retinal degeneration of mice induced by sodium iodate and protects Müller cells from oxidative stress”的学术论文。

研究成果

这篇研究给中医“明目”古方找到了科学依据!枸杞配菊花是中医里经典的“明目” 药对,常用于改善老年人视网膜退行性疾病,比如年龄相关性黄斑变性(AMD),但一直不清楚其具体作用机制。研究团队用碘酸钠诱导小鼠建立干性AMD模型,发现枸杞-菊花的水提物和70%乙醇提取物能显著保护视网膜结构完整,减少细胞凋亡。更关键的是,它们能通过调节Nrf2/HO-1信号通路,增强抗氧化酶活性,减少氧化产物堆积,还能保护视网膜中的Müller细胞——这种细胞是视网膜的“支撑卫士”,对维持视网膜功能至关重要。进一步研究发现,枸杞中的枸杞多糖和菊花中的木犀草素是核心活性成分,它们能通过 caspase依赖通路和Nrf2/HO-1通路发挥抗氧化、抗凋亡作用。这意味着古人推崇的“枸杞菊花茶”并非空谈,其有效成分能实实在在保护视网膜,为干性AMD的预防和治疗提供了天然、安全的新思路,让传统中药在现代眼科疾病治疗中焕发新生。

文献解读

摘要

药理学相关性:枸杞(LF)与菊花(CF)组成的药对是中医临床常用经典组合,用于治疗老年人常见的视网膜退行性疾病(如年龄相关性黄斑变性,AMD)。然而,该药对改善AMD的具体作用机制及活性成分尚未明确。

研究目的:评估枸杞-菊花药对缓解干性AMD小鼠模型视网膜损伤和Müller细胞凋亡的作用,尤其是其在减轻视网膜氧化应激中的作用;阐明其作用机制,并鉴定药对中作用于Müller细胞、缓解氧化应激的活性成分。

材料与方法:通过腹腔注射碘酸钠建立小鼠干性AMD模型;采用不同溶剂制备枸杞-菊花药对提取物,评估其改善视网膜氧化损伤、调节氧化指标的效果,以及对模型小鼠Nrf2/HO-1信号通路的调控作用;利用MIO-M1细胞系评估提取物对碘酸钠诱导的细胞氧化损伤的保护作用,探究其潜在作用机制并鉴定活性成分。

结果:枸杞 - 菊花药对提取物对碘酸钠诱导的小鼠视网膜氧化损伤具有明显保护作用,能维持视网膜结构完整性并抑制细胞凋亡。其中,水提物和70% 乙醇提取物的视网膜保护效果更优,二者可提高实验小鼠视网膜抗氧化酶活性、减少氧化产物生成,并逆转Müller细胞标志物谷氨酰胺合成酶的下调。体外实验中,药对的水提物和70%乙醇提取物还可通过调节caspase依赖通路和Nrf2/HO-1信号通路,保护MIO-M1细胞免受碘酸钠诱导的氧化应激损伤。枸杞多糖和木犀草素可能是发挥上述作用的活性成分。

结论:枸杞-菊花药对可通过调节caspase依赖通路和Nrf2/HO-1信号通路,减轻视网膜氧化应激并抑制Müller细胞凋亡。这些发现为该中药药对作为干性AMD的潜在治疗或预防方案提供了更多科学依据。

关键词

枸杞;菊花;药对;年龄相关性黄斑变性;Müller 细胞;氧化应激;Nrf2/HO-1信号通路

研究亮点

1、首次明确枸杞-菊花药对在干性AMD模型中的保护作用,证实其水提物和70%乙醇提取物为有效活性部位。

2、揭示药对通过调节caspase依赖通路和Nrf2/HO-1信号通路,双重抑制视网膜细胞凋亡、减轻氧化应激的核心机制。

3、证实药对可保护视网膜Müller细胞,逆转其标志物谷氨酰胺合成酶的下调,填补了AMD研究中对Müller细胞关注不足的空白。

4、初步鉴定枸杞多糖(来自枸杞)和木犀草素(来自菊花)为核心活性成分,为药对“明目”功效提供物质基础。

图文赏析

结论

枸杞 - 菊花药对的水提物具有抗氧化活性,可有效保护碘酸钠诱导的干性AMD小鼠模型视网膜免受氧化损伤,并能抑制碘酸钠暴露的Müller细胞凋亡。这些作用可能与调节Nrf2/HO-1信号通路相关,其活性成分可能包括多糖、木犀草素、咖啡酸和绿原酸。本研究为以该中药药对为基础开发干性AMD治疗药物或干预措施提供了实验依据。

参考文献

https://doi.org/10.1016/j.jep.2025.119747

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  1. CONNECT:[ UseTime:0.000341s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000536s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000271s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000266s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000467s ]
  6. SELECT * FROM `set` [ RunTime:0.000192s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000478s ]
  8. SELECT * FROM `article` WHERE `id` = 499887 LIMIT 1 [ RunTime:0.002438s ]
  9. UPDATE `article` SET `lasttime` = 1776426806 WHERE `id` = 499887 [ RunTime:0.018492s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.002083s ]
  11. SELECT * FROM `article` WHERE `id` < 499887 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000532s ]
  12. SELECT * FROM `article` WHERE `id` > 499887 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000475s ]
  13. SELECT * FROM `article` WHERE `id` < 499887 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001196s ]
  14. SELECT * FROM `article` WHERE `id` < 499887 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002052s ]
  15. SELECT * FROM `article` WHERE `id` < 499887 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.007890s ]
0.111216s